Tramway.



No. 873,974. PATBNTBD DEG; 17, 1907.

E. WOLF?.

TRAMWAY.

AFPLIOATION FILED 00T. 29, 1907. l

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M UNITED STATES PATENT OFFICE.

FERDINAND WOLFF, OF MANNHEIM, GERMANY.

TRAMWAY.

To all whom it may concern:

Be it known that I, FERDINAND WOLFF, a subject of the Grand Duke of Baden, residing at Mannheim, Germany, have invented new and useful Improvements in Tramways, of which the following is a specification.

This invention relates to novel means for protecting the surface of a road along the sides of a car track against injury from the vibrations imparted to the road by the cars.

In the accompanying drawing: Figure 1 is a cross section of part of a tramway embodying my invention, and Fig. 2 is a similar section of a modification.

It is well known that the road surface in close proximity to the rails of a car track is unduly strained by the cars, so that the road bed is damaged and eventually destroyed. To overcome this objection, I interpose a rope 10 between each rail 11 and the outer and inner road-beds 12, 13, which may be formed of asphalt, concrete or other material. By this construction any vibration of the rail is taken up by the ropes, and if not entirely absorbed thereby, is elastically transmitted to the road bed, so that the latter is protected against damaging shocks. The ropes are preferably impregnated with tar, carbolineum or other material which prevents decay and protects them 'from absorption of dirt. When a repair is necessary, the ropes can be easily removed and replaced with small expense.

Specification of Letters Patent.

Application filed October 29. 1907. Serial No. 399.711.

Patented Dec. 17, 1907.

In Fig. 1 the rope 10 is circular in cross section, while in Fig. 2 the rope 14 is square in cross section.

If desired, a number of ropes may be placed along each side of the rail in place of the single rope shown. So also the ropes may proj ect slightly above the rail-head and road bed, to take up the shocks of crossing vehicles.

I claim:

1. A tramway provided with a rope eX- tending between the rail and the road bed, substantially as specified.

2. A tramway provided with a rope eX- tending between each side of the rail and the road bed, substantially as specified.

3. A tramway provided with a rope impregnated with a preserving material and extending between the rail and the road bed, substantially as specified.

1. A tramway provided with a rope eX- tending between the rail and the road bed and projecting above said rail and road bed, substantially as specified.

In witness whereof, I have .hereunto signed my name in the presence of two subscribing witnesses.

FERDINAND WOLFF.

Witnesses HENRY HAsPER, WOLDEMAR HAUPT. 

